Lovingly assembled rock-doc will, as is so often the case, appeal mostly to fans. Chronicles somewhat formulaically the band’s early years, its misbehaving and its excesses as success eluded it. (It’s worthy of note that some consider Mott the inspiration for Rob Reiner’s classic 1984 mock-doc This is Spinal Tap). At any rate, Tokyo audiences will be most interested in keyboardist/composer Morgan Fisher, who has lived here since 1985 and puts on a fascinating monthly series of one-man conceptual/improvisational concerts called “Morgan’s Organ” (with photography) at SuperDeluxe.